F1 pole positions
Polesitters
| No. | Grand Prix | Circuit | Driver | Constructor | Race | Pole margin |
|---|---|---|---|---|---|---|
| 1 |  USA | Phoenix |  Gerhard Berger |  McLaren-Honda | DNF | 0.067s |
| 2 |  Brazil | Interlagos | Ayrton Senna | McLaren-Honda | 3 | 0.611s |
| 3 |  San Marino | Imola | Ayrton Senna | McLaren-Honda | DNF | 0.561s |
| 4 |  Monaco | Monte Carlo | Ayrton Senna | McLaren-Honda | 1 | 0.462s |
| 5 |  Canada | Montreal | Ayrton Senna | McLaren-Honda | 1 | 0.066s |
| 6 |  Mexico | Mexico City | Gerhard Berger | McLaren-Honda | 3 | 0.271s |
| 7 |  France | Le Castellet | Nigel Mansell |  Ferrari | 18R | 0.110s |
| 8 | Britain | Silverstone | Nigel Mansell | Ferrari | DNF | 0.643s |
| 9 |  Germany | Hockenheim | Ayrton Senna | McLaren-Honda | 1 | 0.236s |
| 10 |  Hungary | Hungaroring |  Thierry Boutsen | Williams-Renault | 1 | 0.036s |
| 11 | Belgium | Spa-Francorchamps | Ayrton Senna | McLaren-Honda | 1 | 0.583s |
| 12 | Italy | Monza | Ayrton Senna | McLaren-Honda | 1 | 0.402s |
| 13 |  Portugal | Estoril | Nigel Mansell | Ferrari | 1 | 0.038s |
| 14 |  Spain | Jerez | Ayrton Senna | McLaren-Honda | DNF | 0.437s |
| 15 |  Japan | Suzuka | Ayrton Senna | McLaren-Honda | DNF | 0.232s |
| 16 |  Australia | Adelaide | Ayrton Senna | McLaren-Honda | DNF | 0.573s |